diff --git a/vm/root-bootstrap.sh b/vm/root-bootstrap.sh
index 357f74f..ac44298 100755
--- a/vm/root-bootstrap.sh
+++ b/vm/root-bootstrap.sh
@@ -3,8 +3,8 @@
 # Print commands and exit on errors
 set -xe
 
-sudo add-apt-repository ppa:webupd8team/sublime-text-3
-sudo add-apt-repository ppa:webupd8team/atom
+DEBIAN_FRONTEND=noninteractive sudo add-apt-repository -y ppa:webupd8team/sublime-text-3
+DEBIAN_FRONTEND=noninteractive sudo add-apt-repository -y ppa:webupd8team/atom
 
 apt-get update
 
diff --git a/vm/user-bootstrap.sh b/vm/user-bootstrap.sh
old mode 100644
new mode 100755